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Blog Archive

 

Dawn Journal: A New Angle on Ceres

Posted by Marc Rayman on 2016/05/04 01:31 CDT | 24 comments

Since April 11, instead of photographing the scenery directly beneath it, Dawn has been aiming its camera to the left and forward as it orbits and Ceres rotates to map more of the dwarf planet.

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Opposition surge comet

Posted by Emily Lakdawalla on 2016/04/12 10:43 CDT | 1 comments

Today, the Rosetta OSIRIS team's Image of the Day is this highly unusual view of the comet with the Sun very nearly behind the spacecraft.

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LPSC 2016: Differentiated meteorites provide a glimpse of the early solar system and planets

Posted by Helen Ashcroft on 2016/04/11 01:07 CDT | 2 comments

This year's Lunar and Planetary Science Conference included a session devoted to a group of rocks from space called differentiated meteorites, and their proposed parent bodies.

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Dawn Journal: Sharper Views of Ceres

Posted by Marc Rayman on 2016/04/01 09:21 CDT | 1 comments

One year after taking up its new residence in the solar system, Dawn is continuing to witness extraordinary sights on dwarf planet Ceres. Mission Director Marc Rayman brings us his monthly update on Dawn's status.

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LPSC 2016: So. Much. Ceres.

Posted by Emily Lakdawalla on 2016/03/30 06:31 CDT | 13 comments

At last week's Lunar and Planetary Science Conference, I enjoyed a large number of talks about Ceres. Now in its Low-Altitude Mapping Orbit, Dawn is showering scientists with high-resolution, color data.

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Dawn Journal: Success at Ceres

Posted by Marc Rayman on 2016/03/01 07:04 CST | 25 comments

More than eight years after leaving Earth behind for an ambitious deep space adventure, the Dawn mission has now collected all of the data originally planned. Chief Engineer and Mission Director Marc Rayman brings us an update.

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Dawn Journal: Measuring Light

Posted by Marc Rayman on 2016/02/01 01:20 CST | 6 comments

Chief Engineer and Mission Director Marc Rayman explains some of the measurements the Dawn mission is taking at Ceres, most of which depend on sunlight.

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Dawn Journal: Science on Ceres

Posted by Marc Rayman on 2016/01/01 07:02 CST | 15 comments

The Dawn mission is developing humankind’s most intimate portrait ever of a dwarf planet. Mission Director and Chief Engineer Marc Rayman returns with his monthly update on the mission's progress.

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Dawn Journal: Descent to LAMO

Posted by Marc Rayman on 2015/12/02 12:02 CST | 12 comments

Dawn's Chief Engineer and Mission Director Marc Rayman previews what's in store as the spacecraft moves into its final mapping orbit around dwarf planet Ceres.

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DPS 2015: Solar System Formation

Posted by Erika NesvoldJohn Debes on 2015/11/20 05:47 CST | 2 comments

At the 47th Division of Planetary Systems meeting, many presentations touched on some of the most contentious and poorly known aspects of how planets form.

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OSIRIS-REx Progressing Through Environmental Testing

Posted by Dante Lauretta on 2015/11/16 07:49 CST | 3 comments

The OSIRIS-REx spacecraft continues to make steady progress toward launch in September 2016. Environmental testing is now underway to ensure the spacecraft is ready for the many conditions it will experience over its mission.

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DPS 2015: First reconnaissance of Ceres by Dawn

Posted by Emily Lakdawalla on 2015/11/12 08:55 CST | 7 comments

This is the first major meeting since Dawn's arrival at Ceres, and despite competition with Pluto surface science there was a well-attended Ceres talk session on Monday and poster session on Tuesday.

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Dawn Journal: A Bounty of Data

Posted by Marc Rayman on 2015/10/30 08:22 CDT | 16 comments

Dawn has completed another successful campaign to acquire a wealth of data in its exploration of dwarf planet Ceres, providing our clearest and most complete view ever of this world.

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Dawn data from Ceres publicly released: Finally, color global portraits!

Posted by Emily Lakdawalla on 2015/10/22 03:24 CDT | 5 comments

A few days ago, Dawn officially released the first big pile of data from the Ceres mission phase. Thanks to the public release, I can show you color global portraits of Ceres.

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OSIRIS-REx Spacecraft Assembly Nearly Complete

Posted by Dante Lauretta on 2015/10/14 03:45 CDT

The OSIRIS-REx mission continues to make great progress and is in the Assembly, Test, and Launch Operations (ATLO) phase of the program. There's been many great accomplishments leading up to this point.

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How do you pronounce "Ryugu?"

Posted by Emily Lakdawalla on 2015/10/07 02:06 CDT | 2 comments

With some help from astronomer Elizabeth Tasker and a group of astronomy graduate students from the University of Hokkaido, I learn how.

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Hayabusa2's target asteroid has a name!

Posted by Emily Lakdawalla on 2015/10/05 12:19 CDT | 2 comments

JAXA announced today the results of the naming contest for Hayabusa2. The target of the sample-return mission, formerly known as 1999 JU3 and still numbered 162173, is now named 162173 Ryugu.

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Favorite Astro Plots #1: Asteroid orbital parameters

Posted by Emily Lakdawalla on 2015/10/01 03:42 CDT | 3 comments

This is the first in a series of posts in which scientists share favorite planetary science plots. For my #FaveAstroPlot, I explain what you can see when you look at how asteroid orbit eccentricity and inclination vary with distance from the Sun.

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Dawn Journal: 8 Years in Space

Posted by Marc Rayman on 2015/09/28 07:49 CDT | 18 comments

On the 8th anniversary of the launch of the Dawn spacecraft, Chief Engineer and Mission Director Marc Rayman gives his annual summary of Dawn’s progress on its interplanetary travels.

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Searching for the Origins of Earth’s Water

Posted by Van Kane on 2015/09/17 10:03 CDT | 1 comments

Three recently proposed low-cost space missions all aim to answer the same question: Where did Earth's abundant water come from?

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